add blt vs model (#1482)

* add blt vs model

* change pretrained import to .pretrained

* change pretrained import to .pretrained in __init__

* remove test.py

* add test

* correct check models import

* improve __init__

* sys path insert for model in init

* sys path insert for pretrained in model.py

* empty test without identifier

brainscore_vision/models/blt-vs/__init__.py

@@ -0,0 +1,15 @@
+
+from brainscore_vision import model_registry
+from brainscore_vision.model_helpers.brain_transformation import ModelCommitment
+import sys 
+import os
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+from model import get_model, LAYERS
+
+
+
+model_registry['blt_vs'] = lambda: ModelCommitment(
+    identifier='blt_vs',
+    activations_model=get_model(),
+    layers=LAYERS)
+